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<?php $dirs = array( '12345', '22345', '32345', '42345', '52345', 'Aberdeen', 'Arundel', 'Aberyswith', 'Bath', 'Bristol', 'Brighton', 'Cardiff', 'coventry', ); $cur_let = null; foreach ($dirs as $dir) { $first_let = (is_numeric(strtoupper(substr($dir,0,1))) ? '#' : strtoupper(substr($dir,0,1))); if ($cur_let !== $first_let){ $cur_let = $first_let; echo $cur_let."\n"; } echo $dir . "\n"; }
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